Time gas-valve.



PATB'NTED JULY 7, 1903.

H; MQDUFFIB, JR. TIME GAS VALVE.

APPLICATION FILED DEC. 29, 1902.

N0 MODEL.

I NITED STTES iatented July 7, 1901 PATENT GFFIGE.

TIME. GAS-VALVE.

SPECIFICATION forming part of Letters Patent No. 733,254, dated July 1'', lees.

Application filed December 29, 1902. $erial No. 137,030. (No model.)

11 0 all whom it may concern.-

Be it known thatI, HENRY MCDUFFIE,Jr., a citizen of the United States, residing at Fayetteville, in the county of Cumberland and State of North Carolina, have invented a new and useful Gas Cut-Off, of which the following is a specification.

My invention relates to gas cut-off devices, and has for its objects to produce a device actuated by a clockwork mechanism which may be set to cut off the gas at a certain predetermined time and which will when so set operate automatically to cut off the gas at the gas-meter, thus providing for extinguishing the lights in a store or the like at any pre determined hour during the night, the present invention being directed to the production of a simple, efficient, and inexpensive mechanism for attaining this end.

The invention comprises the details of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure 1 is a perspective view of the device. Fig. 2 is a vertical sectional elevation of the same.

Referring to the drawings, 1 indicates a gas conduit or main which leads from the meter and supplies gas to the branch pipes of a system.

2 is a cut-0E valve located in the pipe at the point adjacent to the meter and provided with the usual finger-piece 3, which projects horizontally therefrom. Secured t0 the stem of the cut-off valve is one end of a torsionspring 4, which has its opposite end secured to the floor or other framework adjacent to the gas-main.

5 is a vertical finger of spring metal or the like secured to the floor and projecting upwardly therefrom at a point adjacent to the cut-off valve. This finger is bent to form an elbow or stop 6, which engages the fingerpiece of the valve when the same is turned to open the valve, thus serving to maintain the same normally open and permit the flow of gas through the main. the finger 5 is bent to form a horizontallyextending arm '7 for the purpose presently described.

8 indicates a clock of the ordinary alarm The upper end of the alarm it will also set in motion the gearpinion 11, which in turn will actuate the rack and move the same horizontally forward in the direction indicated by the arrow, and as the rack moves forward its end will engage the arm 7 and force the stop 6 from beneath the finger-piece of the cut-off valve, thus permitting the torsion-spring, which is normally under tension, to rotate the valve-stem and close the valve, thus cutting off the supply of gas at the meter and extinguishing the lights fed therefrom.

From the foregoing description it will be seen that I produce a device of very simple character which may be readily and inexpensively applied to any gas-main and which will automatically cut off the-gas and extinguish the lights at any predetermined hour simply by setting the clock-alarm to sound at the hour desired, which willcause the clock to actuate the cutting-0E mechanism in the manner above explained. In attaining these ends I do not limit myself to the details of construction herein shown and described, as various minor changes may be made therein without departing from the spirit or scope of my invention.

Having thus described my invention, what I claim is 1. In a gas cut-off, the combination with a gas-main, of a cut-off valve therefor, a clockwork mechanism, a supporting-base therefor, a spring-finger extending upward from the base and engaging the valve to hold the same normally open, a rack carried and operated by the clockwork mechanism for moving the finger out of engagement with the valve to release the latter, and means carried by the valve for automatically closingthe same when released.

2 in a gas ant-0E the combination with a I valve forautomatieallyclosing the same when 16 gas-main, of a cut-01f valve therefor, a clockwork mechanism, a supporting-base therefor, a spring-finger extending upward from the base and engaging the valve to hold the same normally open, a rack carried and operated by the clockwork mechanism for moving the finger out of engagement with the valve to release the latter, and a spring carried by the released.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

HENRY MCDUFFIE, JR.

Witnesses:

R. H. MODUFFIE, J M. TOMLINSON. 

